Effect of atmospheric conditions on the physicomechanical properties of grade P2015K polyethylene

It is shown that the physicomechanical properties of grade P2015K polyethylene depend both on the external conditions and, to a considerable extent, on the "history" of the part. Differences in supermolecular structure are responsible for the nonuniformity of the physico-mechanical properties of otherwise similar parts.Institute of Polymer Mechanics, Academy of Sciences of the Latvian SSR, Riga. Translated from Mekhanika Polimerov, No. 4, pp. 737–740, July–August, 1969.